SI-BONE, Inc.: director Jeffrey W Dunn sold 20,000 shares

What happened

• Jeffrey W. Dunn, director, exercised options for 20,000 shares at $4.68 per share on Oct 1, 2026, acquiring 20,000 shares for $93,600. The Form 4 reports an open market sale of 20,000 shares at a weighted average price of $18.47 per share on Oct 1, 2026, disposing of 20,000 shares for $369,400. The filing also reports a derivative disposition of 20,000 shares at $0.00 on Oct 1, 2026.

Key details

• Transaction date: Oct 1, 2026.
• Exercise: 20,000 shares at $4.68 per share, total $93,600.
• Sale: 20,000 shares at weighted average $18.47 per share, total $369,400; trade prices ranged from $18.28 to $18.96 (F2).
• Derivative disposition: 20,000 shares at $0.00, total $0 (reported as a derivative transaction).
• Shares owned after the transaction: Not reported in the Form 4.
• Relevant footnotes: sale effected under a 10b5-1 trading plan dated May 7, 2025 (F1); price range and weighted-average details (F2); includes 10,957 shares issuable on settlement of restricted stock units (F3); shares held by The Jeffrey W. Dunn Living Trust dated May 17, 2012 (F4); option vesting occurs in equal monthly installments over four years (F5).
• Form filed Oct 5, 2026.

Why it may matter

• The filing shows an options exercise and a same-day open market sale of the same number of shares, consistent with a cashless exercise (shares sold at once after exercise).
• The sale was executed pursuant to a 10b5-1 trading plan (F1).
• This filing does not show why the insider traded or why the company acted.